Patents by Inventor Larry F. Nonemaker

Larry F. Nonemaker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrocoating process for depositing a corrosion retardant layer on a metal substrate and sequentially electrocoating a cationic film-forming polymer coating
    Patent number: 3954588
    Abstract: An improved electrocoating process in which a metal substrate is first coated with an anionic layer, for example, anions of an acidic material such as phosphoric acid or chromic acid are used, the anions combine with the metal to form a corrosion retardant layer and then the substrate is electrocoated with a cationic film-forming polymer and dried to form a continuous film.An aqueous electrocoating composition of an acrylic cationic film-forming polymer reacted with an acid material also is a part of this invention.
    Type: Grant
    Filed: October 1, 1974
    Date of Patent: May 4, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Isidor Hazan, Robert N. Iacona, Larry F. Nonemaker